I am a 2 week old Australorp- do you think I am a rooster?

We have 5 Australorps and this one looks different. It has no tail feathers to speak of and the other 4 have had them for quite a while. This one also has a larger comb, but it's not really "red" but just curious... May still be too early to tell for sure, but if anyone would like to share their knowledge, please do.